<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./OL_SDK/include-openlayers-local.js"></script>
    <script src="./libs/gaode.js"></script>
    <script src="./utils/createDraw.js"></script>
</head>

<body>
    <div id="map">
    </div>
    <script>
        var map = new ol.Map({
            target: "map",
            layers: [gaode],
            view: new ol.View({
                projection: 'EPSG:4326',
                center: [114.30, 30.50],
                zoom: 4
            })
        })
        /* 创建画布 */
        const source = new ol.source.Vector({

        })
        const layer = new ol.layer.Vector({
            source
        })
        map.addLayer(layer);
        /* 创建画笔 */
        let draw = createDraw({
            type: "Square",
            source,
            callback: evt => {
                /* Circle获取不动坐标 */
                var position = evt.feature.getGeometry().getCoordinates();
                console.log(position)
            }
        })
        /* 激活画笔 */
        map.addInteraction(draw);
    </script>
</body>

</html>